package com.auto.netty.protocoltcp;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;

import java.nio.charset.Charset;

public class NettyClientHandler extends SimpleChannelInboundHandler<MessageProtocol> {
    private int count;

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        //向客户端发送10条数据
        for (int i = 0; i < 10; i++) {
            String msg = "你好，客户端" + i;
            byte[] content = msg.getBytes(Charset.forName("utf-8"));
            int length = msg.getBytes(Charset.forName("utf-8")).length;
            //创建协议包对象
            MessageProtocol messageProtocol = new MessageProtocol();
            messageProtocol.setLength(length);
            messageProtocol.setContent(content);
            ctx.writeAndFlush(messageProtocol);
        }
    }

    @Override
    protected void channelRead0(ChannelHandlerContext ctx, MessageProtocol msg) throws Exception {
        int length = msg.getLength();
        byte[] content = msg.getContent();

        System.out.println("客户端收到数据如下");
        System.out.println("长度：" + length);
        System.out.println("内容：" + new String(content, Charset.forName("utf-8")));
        System.out.println("客户端收到消息包数量 = " + (++this.count));

    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        System.out.println("异常消息：" + cause.getMessage());
        ctx.close();
    }
}
